Updated Feb. 21, 11:56 a.m. ET
Coming off a shift at Tuen Mun Hospital in Hong Kong on Wednesday night, cardiologist Alfred Wong was getting ready to go to dinner with his wife. The last time they ate together, she brought the meal to the courtyard below their apartment, placed it on a bench, then sat down at least 10 feet away.
From across the patio, they ate. On separate benches. Looking at each other.